CAPA Peptide Analogues for Targeted Insect Control
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Solution Overview
Problem
Current insecticides are broad-spectrum and have detrimental environmental impacts, necessitating the development of target-specific, greener alternatives for controlling hemipteran and dipteran insects like aphids and fruit flies without affecting important pollinators.
Innovation Solution
Development of analogues of CAPA peptides with specific activity against hemipteran and dipteran insects, such as LVAFPRV and LYAFARV, which act as insecticidal compounds by contacting the insects topically or through substrates like plants, minimizing impact on pollinators like bees.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If broad-spectrum insecticides are used to control hemipteran and dipteran insects, then insect mortality increases, but environmental harm and impact on pollinators worsen
Solution Approach 1:
The patent applies local quality by designing neuropeptide analogues with specific amino acid sequences (e.g., LVAFPRV, LYAFARV) that are highly selective for hemipteran and dipteran insect receptors. This specificity ensures the insecticidal action is localized to target species while sparing pollinators like bees, thereby resolving the contradiction between effective insect control and environmental protection
2Adaptability or versatility
If wild-type CAPA peptides are used as insecticidal agents, then target-specificity is improved, but stability against proteases worsens
Solution Approach 1:
The patent applies parameter changes by systematically modifying the amino acid sequence of wild-type CAPA peptides to create analogues with enhanced protease stability. Specific substitutions at key positions (e.g., introducing N-methylated amino acids, modifying the C-terminal amide bond) increase resistance to proteolytic degradation while preserving receptor binding affinity and insecticidal activity against target species
3Object-affected harmful factors
If neuropeptide analogues are developed for target-specific insect control, then environmental impact is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent applies this principle by developing neuropeptide analogues that can be synthesized through relatively simple chemical or biochemical methods, allowing for cost-effective production despite the specialized sequences required for target specificity. The modular nature of peptide synthesis enables scalable manufacturing while maintaining the environmental benefits of reduced non-target effects
Data Source
AI summary
The present invention relates to analogues of insect neuropeptides having activity against hemipteran and dipteran insects, such as aphids and fruit flies, and their use as insect control agents (e.g. insecticides) and plant protection agents.